From cf1bc96e289894f132b7e43def5bff70faa83931 Mon Sep 17 00:00:00 2001
From: Kids Return <leonsw.com@gmail.com>
Date: Mon, 23 Aug 2021 15:38:19 +0800
Subject: [PATCH] Fixed type error when using
 `Hyperf\Validation\Rules\Unique::__toString()` in PHP8. (#3969)
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

Co-authored-by: 李铭昕 <715557344@qq.com>
---
 CHANGELOG-2.2.md                                        | 4 ++++
 src/validation/src/Rules/DatabaseRule.php               | 2 +-
 src/validation/tests/Cases/ValidationUniqueRuleTest.php | 4 ++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG-2.2.md b/CHANGELOG-2.2.md
index e81227923..7f468803b 100644
--- a/CHANGELOG-2.2.md
+++ b/CHANGELOG-2.2.md
@@ -1,5 +1,9 @@
 # v2.2.6 - TBD
 
+## Fixed
+
+- [#3969](https://github.com/hyperf/hyperf/pull/3969) Fixed type error when using `Hyperf\Validation\Rules\Unique::__toString()` in PHP8.
+
 # v2.2.5 - 2021-08-23
 
 ## Fixed
diff --git a/src/validation/src/Rules/DatabaseRule.php b/src/validation/src/Rules/DatabaseRule.php
index 384c3e802..3f1ef3948 100755
--- a/src/validation/src/Rules/DatabaseRule.php
+++ b/src/validation/src/Rules/DatabaseRule.php
@@ -159,7 +159,7 @@ trait DatabaseRule
     protected function formatWheres(): string
     {
         return collect($this->wheres)->map(function ($where) {
-            return $where['column'] . ',' . '"' . str_replace('"', '""', $where['value']) . '"';
+            return $where['column'] . ',' . '"' . str_replace('"', '""', (string) $where['value']) . '"';
         })->implode(',');
     }
 }
diff --git a/src/validation/tests/Cases/ValidationUniqueRuleTest.php b/src/validation/tests/Cases/ValidationUniqueRuleTest.php
index 3ca7c0133..7c95c401a 100644
--- a/src/validation/tests/Cases/ValidationUniqueRuleTest.php
+++ b/src/validation/tests/Cases/ValidationUniqueRuleTest.php
@@ -59,6 +59,10 @@ class ValidationUniqueRuleTest extends TestCase
         $rule = new Unique('table');
         $rule->where('foo', '"bar"');
         $this->assertEquals('unique:table,NULL,NULL,id,foo,"""bar"""', (string) $rule);
+
+        $rule = new Unique('table');
+        $rule->where('foo', 1);
+        $this->assertEquals('unique:table,NULL,NULL,id,foo,"1"', (string) $rule);
     }
 }